Storms that ramp up so quickly complicate forecasting and make it harder for government agencies to plan for emergencies.

Hurricane Erin has strengthened into a Category 2 storm as it approaches Puerto Rico and the Virgin Islands, bringing heavy ...

With maximum wind speeds back down to 125 mph, Erin remains a Category 3 storm, but is expected to strengthen again in the ...

Despite this, the US National Hurricane Center (NHC) says Erin is growing in size, with tropical-storm-strength winds ...

Hurricane Erin restrengthened into a Category 4 storm late Sunday, with forecasters warning it is expected to intensify and grow in size in the coming days as it lashes Caribbean ...

The storm will remain a major hurricane through the middle of the week, according to the National Hurricane Center.

SAN JUAN, Puerto Rico (AP) — Erin strengthened into a powerful Category 4 hurricane in the Caribbean on Saturday and ...

It quickly powered up from a tropical storm to a Category 5 in a single day, the National Hurricane Center said.

Offshore Hurricane Erin was downgraded to a Category 3 storm early Sunday, as rain lashed Caribbean islands and weather ...

Hurricane Erin has maintained 125 mph winds as it brought damaging impacts to parts of the Puerto Rico and the U.S. Virgin ...